To swap
spit, like
making out. It is a form of
oral sex - fluid exchange takes place, in the form of saliva.
Jenkin and Jessica were
spit kissing so intensely they had each other's saliva running down their
cheeks.
Jenkin: You're hot.
Jessica: (slobbering) I know, right?
(start slurping up
spit from each other's mouth)